Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Central Illinois
Issued by NWS Central Illinois
525
FNUS53 KILX 190741
FWFILX
Fire Weather Planning Forecast for Central/Southeast Illinois
National Weather Service Lincoln IL
241 AM CDT Sat Sep 19 2026
.DISCUSSION...
A nearly stationary frontal boundary will continue to be the focus
for thunderstorms this weekend. The greatest areal coverage of
storms will focus along and north of the I-74 corridor today...then
will spread further southward across the remainder of central and
southeast Illinois on Sunday. Due to low mixing heights and light
winds, ventilation will remain poor both days.
ILZ027>031-036-037-192115-
Knox-Stark-Peoria-Marshall-Woodford-Fulton-Tazewell-
Including the cities of Galesburg, Toulon, Peoria, Lacon, Eureka,
Canton, and Pekin
241 AM CDT Sat Sep 19 2026
Today Tonight Sun
Cloud Cover Mcldy Mcldy Mcldy
Precip Type Tstms Tstms Tstms
Chance Precip (%) 40 70 70
Chance of Thunder (%) 40 60 40
Temp (24h trend) 86 (+7) 67 (-1) 75
RH % (24h trend) 68 (-13) 100 (0) 85
Wind 20ft/early(mph) Lgt/Var Lgt/Var Lgt/Var
Wind 20ft/late(mph) S 5 Lgt/Var NE 9 G18
Precip Amount 0.08 0.22 0.30
Precip Duration 1 5 9
Precip Begin 6 AM 7 PM Continuing
Precip End 2 PM Continuing Continuing
Mixing Hgt(ft-agl) 2280 2160
1700ft Mixing Temp 83 75
Transport Wnd (mph) S 13 NE 15
Vent Rate (mph-ft) 29640 32400
Vent Rate Category Poor Poor
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.MONDAY...Mostly cloudy with showers likely and a chance of
thunderstorms. Lows in the upper 50s. Highs in the mid 60s.
Minimum RH 83 percent. Northeast winds around 10 mph.
.TUESDAY...Mostly cloudy. Lows in the lower 50s. Highs in the mid
60s. Minimum RH 73 percent. Northeast winds around 10 mph.
.WEDNESDAY...Partly cloudy. Lows around 50. Highs in the upper
60s. Minimum RH 71 percent. North winds around 5 mph.
.THURSDAY...Partly cloudy. Lows in the lower 50s. Highs around
70. Minimum RH 69 percent. North winds around 5 mph.
.FRIDAY...Partly cloudy. Lows in the mid 50s. Highs in the lower
70s. Minimum RH 66 percent. Northeast winds around 5 mph.
$$
ILZ038-043>046-055>057-063-192115-
McLean-De Witt-Piatt-Champaign-Vermilion-Douglas-Coles-Edgar-
Clark-
Including the cities of Bloomington, Normal, Clinton, Monticello,
Champaign, Urbana, Danville, Tuscola, Charleston, Mattoon, Paris,
and Marshall
241 AM CDT Sat Sep 19 2026
Today Tonight Sun
Cloud Cover Mcldy Pcldy Pcldy
Precip Type Tstms Tstms Tstms
Chance Precip (%) 50 20 60
Chance of Thunder (%) 50 20 40
Temp (24h trend) 90 (+6) 68 (0) 85
RH % (24h trend) 54 (-23) 100 (0) 61
Wind 20ft/early(mph) S 5 Lgt/Var Lgt/Var
Wind 20ft/late(mph) SE 5 Lgt/Var N 7
Precip Amount 0.12 0.03 0.12
Precip Duration 2 1 5
Precip Begin 7 AM 10 PM Continuing
Precip End 6 PM Continuing Continuing
Mixing Hgt(ft-agl) 2540 2870
1700ft Mixing Temp 85 82
Transport Wnd (mph) S 9 NW 12
Vent Rate (mph-ft) 22860 34440
Vent Rate Category Poor Poor
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.MONDAY...Mostly cloudy with showers likely and a chance of
thunderstorms. Lows in the upper 50s. Highs in the upper 60s.
Minimum RH 78 percent. Northeast winds around 10 mph.
.TUESDAY...Mostly cloudy. A chance of showers. Lows in the lower
50s. Highs in the upper 60s. Minimum RH 68 percent. Northeast
winds around 10 mph.
.WEDNESDAY...Mostly cloudy. Lows in the lower 50s. Highs in the
upper 60s. Minimum RH 67 percent. North winds 5 to 10 mph.
.THURSDAY...Partly cloudy. Lows in the lower 50s. Highs in the
lower 70s. Minimum RH 63 percent. North winds around 5 mph.
.FRIDAY...Partly cloudy. Lows in the mid 50s. Highs in the mid
70s. Minimum RH 57 percent. Northeast winds around 5 mph.
$$
ILZ040>042-047>054-061-192115-
Schuyler-Mason-Logan-Cass-Menard-Scott-Morgan-Sangamon-Christian-
Macon-Moultrie-Shelby-
Including the cities of Rushville, Havana, Lincoln, Beardstown,
Petersburg, Winchester, Jacksonville, Springfield, Taylorville,
Decatur, Sullivan, and Shelbyville
241 AM CDT Sat Sep 19 2026
Today Tonight Sun
Cloud Cover Pcldy Pcldy Mcldy
Precip Type None Tstms Tstms
Chance Precip (%) 0 30 50
Chance of Thunder (%) 0 20 40
Temp (24h trend) 92 (+3) 68 (-3) 86
RH % (24h trend) 46 (-18) 99 (+2) 60
Wind 20ft/early(mph) Lgt/Var Lgt/Var Lgt/Var
Wind 20ft/late(mph) SW 5 Lgt/Var N 5
Precip Amount 0.00 0.03 0.13
Precip Duration 1 3
Precip Begin 11 PM Continuing
Precip End Continuing Continuing
Mixing Hgt(ft-agl) 3430 3280
1700ft Mixing Temp 88 82
Transport Wnd (mph) SW 10 W 9
Vent Rate (mph-ft) 34300 29520
Vent Rate Category Poor Poor
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.MONDAY...Mostly cloudy with showers likely and a chance of
thunderstorms. Lows around 60. Highs around 70. Minimum RH
80 percent. Northeast winds around 10 mph.
.TUESDAY...Mostly cloudy. Lows in the mid 50s. Highs in the upper
60s. Minimum RH 68 percent. Northeast winds around 10 mph.
.WEDNESDAY...Partly cloudy. Lows in the lower 50s. Highs around
70. Minimum RH 65 percent. North winds around 5 mph.
.THURSDAY...Partly cloudy. Lows in the lower 50s. Highs in the
lower 70s. Minimum RH 61 percent. North winds around 5 mph.
.FRIDAY...Partly cloudy. Lows in the mid 50s. Highs in the mid
70s. Minimum RH 57 percent. Northeast winds around 5 mph.
$$
ILZ062-066>068-071>073-192115-
Cumberland-Effingham-Jasper-Crawford-Clay-Richland-Lawrence-
Including the cities of Greenup, Effingham, Newton, Robinson,
Flora, Olney, and Lawrenceville
241 AM CDT Sat Sep 19 2026
Today Tonight Sun
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Tstms None Tstms
Chance Precip (%) 20 0 30
Chance of Thunder (%) 20 0 30
Temp (24h trend) 96 (0) 70 (0) 93
RH % (24h trend) 37 (-10) 80 (-19) 39
Wind 20ft/early(mph) Lgt/Var Lgt/Var Lgt/Var
Wind 20ft/late(mph) W 5 Lgt/Var NW 5
Precip Amount 0.00 0.00 0.00
Precip Duration
Precip Begin
Precip End
Mixing Hgt(ft-agl) 5190 5120
1700ft Mixing Temp 91 91
Transport Wnd (mph) W 9 W 8
Vent Rate (mph-ft) 46710 40960
Vent Rate Category Fair Poor
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.MONDAY...Mostly cloudy with showers likely and a chance of
thunderstorms. Lows in the mid 60s. Highs in the upper 70s.
Minimum RH 67 percent. Northeast winds 5 to 10 mph.
.TUESDAY...Mostly cloudy. A chance of showers. Lows in the upper
50s. Highs in the lower 70s. Minimum RH 60 percent. Northeast
winds around 10 mph.
.WEDNESDAY...Mostly cloudy. Lows in the mid 50s. Highs in the
lower 70s. Minimum RH 57 percent. North winds around 5 mph.
.THURSDAY...Partly cloudy. Lows in the mid 50s. Highs in the mid
70s. Minimum RH 53 percent. North winds around 5 mph.
.FRIDAY...Partly cloudy. Lows in the mid 50s. Highs in the mid
70s. Minimum RH 49 percent. North winds around 5 mph.
$$
Barnes